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Finding the Fourth Proportional to 663,459.40, 995,189.10 and 220,227.40

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Solution

The fourth proportional to 663,459.40, 995,189.10 and 220,227.40 is: 330,341.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,459.40 : 995,189.10 = 220,227.40 : x
  2. Step 2: Convert to fraction form
    663,459.40/995,189.10 = 220,227.40/x
  3. Step 3: Cross multiply
    663,459.40x = 995,189.10 × 220,227.40
  4. Step 4: Simplify right side
    663,459.40x = 219,167,908,001.34
  5. Step 5: Solve for x
    x = 219,167,908,001.34/663,459.40
  6. Step 6: Final answer
    x = 330,341.10

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Half scale
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Double scale
Find fourth proportional to 663,460.40, 995,190.60 and 220,228.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.