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Finding the Fourth Proportional to 113,347.20, 156,415.20 and 62,359.68

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Solution

The fourth proportional to 113,347.20, 156,415.20 and 62,359.68 is: 86,054.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,347.20 : 156,415.20 = 62,359.68 : x
  2. Step 2: Convert to fraction form
    113,347.20/156,415.20 = 62,359.68/x
  3. Step 3: Cross multiply
    113,347.20x = 156,415.20 × 62,359.68
  4. Step 4: Simplify right side
    113,347.20x = 9,754,001,819.14
  5. Step 5: Solve for x
    x = 9,754,001,819.14/113,347.20
  6. Step 6: Final answer
    x = 86,054.19

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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.