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Finding the Fourth Proportional to 721,598.76, 995,947.14 and 435,165.48

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Solution

The fourth proportional to 721,598.76, 995,947.14 and 435,165.48 is: 600,613.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,598.76 : 995,947.14 = 435,165.48 : x
  2. Step 2: Convert to fraction form
    721,598.76/995,947.14 = 435,165.48/x
  3. Step 3: Cross multiply
    721,598.76x = 995,947.14 × 435,165.48
  4. Step 4: Simplify right side
    721,598.76x = 433,401,815,232.73
  5. Step 5: Solve for x
    x = 433,401,815,232.73/721,598.76
  6. Step 6: Final answer
    x = 600,613.30

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Half scale
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Double scale
Find fourth proportional to 721,599.76, 995,948.52 and 435,166.48
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.