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Finding the Fourth Proportional to 113,271, 156,314.16 and 62,970

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Solution

The fourth proportional to 113,271, 156,314.16 and 62,970 is: 86,898.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,271 : 156,314.16 = 62,970 : x
  2. Step 2: Convert to fraction form
    113,271/156,314.16 = 62,970/x
  3. Step 3: Cross multiply
    113,271x = 156,314.16 × 62,970
  4. Step 4: Simplify right side
    113,271x = 9,843,102,655.20
  5. Step 5: Solve for x
    x = 9,843,102,655.20/113,271
  6. Step 6: Final answer
    x = 86,898.70

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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.