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Finding the Fourth Proportional to 661,127.68, 912,103.68 and 406,397.44

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Solution

The fourth proportional to 661,127.68, 912,103.68 and 406,397.44 is: 560,673.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,127.68 : 912,103.68 = 406,397.44 : x
  2. Step 2: Convert to fraction form
    661,127.68/912,103.68 = 406,397.44/x
  3. Step 3: Cross multiply
    661,127.68x = 912,103.68 × 406,397.44
  4. Step 4: Simplify right side
    661,127.68x = 370,676,600,566.58
  5. Step 5: Solve for x
    x = 370,676,600,566.58/661,127.68
  6. Step 6: Final answer
    x = 560,673.24

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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.