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Finding the Fourth Proportional to 113,710.56, 156,921.28 and 63,412.80

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Solution

The fourth proportional to 113,710.56, 156,921.28 and 63,412.80 is: 87,510.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,710.56 : 156,921.28 = 63,412.80 : x
  2. Step 2: Convert to fraction form
    113,710.56/156,921.28 = 63,412.80/x
  3. Step 3: Cross multiply
    113,710.56x = 156,921.28 × 63,412.80
  4. Step 4: Simplify right side
    113,710.56x = 9,950,817,744.38
  5. Step 5: Solve for x
    x = 9,950,817,744.38/113,710.56
  6. Step 6: Final answer
    x = 87,510.06

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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.