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Finding the Fourth Proportional to 721,580.69, 995,886.96 and 415,598.23

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Solution

The fourth proportional to 721,580.69, 995,886.96 and 415,598.23 is: 573,586.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,580.69 : 995,886.96 = 415,598.23 : x
  2. Step 2: Convert to fraction form
    721,580.69/995,886.96 = 415,598.23/x
  3. Step 3: Cross multiply
    721,580.69x = 995,886.96 × 415,598.23
  4. Step 4: Simplify right side
    721,580.69x = 413,888,857,856.08
  5. Step 5: Solve for x
    x = 413,888,857,856.08/721,580.69
  6. Step 6: Final answer
    x = 573,586.38

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Half scale
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Double scale
Find fourth proportional to 721,581.69, 995,888.34 and 415,599.23
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.