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Finding the Fourth Proportional to 157,722.60, 217,601.28 and 101,165.16

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Solution

The fourth proportional to 157,722.60, 217,601.28 and 101,165.16 is: 139,572.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,722.60 : 217,601.28 = 101,165.16 : x
  2. Step 2: Convert to fraction form
    157,722.60/217,601.28 = 101,165.16/x
  3. Step 3: Cross multiply
    157,722.60x = 217,601.28 × 101,165.16
  4. Step 4: Simplify right side
    157,722.60x = 22,013,668,307.40
  5. Step 5: Solve for x
    x = 22,013,668,307.40/157,722.60
  6. Step 6: Final answer
    x = 139,572.06

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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.