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Finding the Fourth Proportional to 113,487, 156,613.14 and 63,187.08

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Solution

The fourth proportional to 113,487, 156,613.14 and 63,187.08 is: 87,198.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,487 : 156,613.14 = 63,187.08 : x
  2. Step 2: Convert to fraction form
    113,487/156,613.14 = 63,187.08/x
  3. Step 3: Cross multiply
    113,487x = 156,613.14 × 63,187.08
  4. Step 4: Simplify right side
    113,487x = 9,895,927,006.23
  5. Step 5: Solve for x
    x = 9,895,927,006.23/113,487
  6. Step 6: Final answer
    x = 87,198.77

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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.