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Finding the Fourth Proportional to 648,193.40, 972,290.10 and 536,000.30

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Solution

The fourth proportional to 648,193.40, 972,290.10 and 536,000.30 is: 804,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,193.40 : 972,290.10 = 536,000.30 : x
  2. Step 2: Convert to fraction form
    648,193.40/972,290.10 = 536,000.30/x
  3. Step 3: Cross multiply
    648,193.40x = 972,290.10 × 536,000.30
  4. Step 4: Simplify right side
    648,193.40x = 521,147,785,287.03
  5. Step 5: Solve for x
    x = 521,147,785,287.03/648,193.40
  6. Step 6: Final answer
    x = 804,000.45

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Half scale
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Double scale
Find fourth proportional to 648,194.40, 972,291.60 and 536,001.30
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.