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Finding the Fourth Proportional to 157,039.20, 216,741.60 and 93,412.80

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Solution

The fourth proportional to 157,039.20, 216,741.60 and 93,412.80 is: 128,926.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,039.20 : 216,741.60 = 93,412.80 : x
  2. Step 2: Convert to fraction form
    157,039.20/216,741.60 = 93,412.80/x
  3. Step 3: Cross multiply
    157,039.20x = 216,741.60 × 93,412.80
  4. Step 4: Simplify right side
    157,039.20x = 20,246,439,732.48
  5. Step 5: Solve for x
    x = 20,246,439,732.48/157,039.20
  6. Step 6: Final answer
    x = 128,926.02

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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.