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Finding the Fourth Proportional to 157,352.80, 217,129.44 and 93,678.16

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Solution

The fourth proportional to 157,352.80, 217,129.44 and 93,678.16 is: 129,265.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,352.80 : 217,129.44 = 93,678.16 : x
  2. Step 2: Convert to fraction form
    157,352.80/217,129.44 = 93,678.16/x
  3. Step 3: Cross multiply
    157,352.80x = 217,129.44 × 93,678.16
  4. Step 4: Simplify right side
    157,352.80x = 20,340,286,421.03
  5. Step 5: Solve for x
    x = 20,340,286,421.03/157,352.80
  6. Step 6: Final answer
    x = 129,265.49

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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.