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Finding the Fourth Proportional to 611,613.86, 917,452.47 and 156,209.38

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Solution

The fourth proportional to 611,613.86, 917,452.47 and 156,209.38 is: 234,322.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,613.86 : 917,452.47 = 156,209.38 : x
  2. Step 2: Convert to fraction form
    611,613.86/917,452.47 = 156,209.38/x
  3. Step 3: Cross multiply
    611,613.86x = 917,452.47 × 156,209.38
  4. Step 4: Simplify right side
    611,613.86x = 143,314,679,810.32
  5. Step 5: Solve for x
    x = 143,314,679,810.32/611,613.86
  6. Step 6: Final answer
    x = 234,322.16

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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.