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Finding the Fourth Proportional to 157,018.60, 216,609.36 and 93,311.28

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Solution

The fourth proportional to 157,018.60, 216,609.36 and 93,311.28 is: 128,724.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,018.60 : 216,609.36 = 93,311.28 : x
  2. Step 2: Convert to fraction form
    157,018.60/216,609.36 = 93,311.28/x
  3. Step 3: Cross multiply
    157,018.60x = 216,609.36 × 93,311.28
  4. Step 4: Simplify right side
    157,018.60x = 20,212,096,641.58
  5. Step 5: Solve for x
    x = 20,212,096,641.58/157,018.60
  6. Step 6: Final answer
    x = 128,724.22

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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.