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Finding the Fourth Proportional to 93,132.96, 128,532.48 and 57,343.92

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Solution

The fourth proportional to 93,132.96, 128,532.48 and 57,343.92 is: 79,140.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,132.96 : 128,532.48 = 57,343.92 : x
  2. Step 2: Convert to fraction form
    93,132.96/128,532.48 = 57,343.92/x
  3. Step 3: Cross multiply
    93,132.96x = 128,532.48 × 57,343.92
  4. Step 4: Simplify right side
    93,132.96x = 7,370,556,250.52
  5. Step 5: Solve for x
    x = 7,370,556,250.52/93,132.96
  6. Step 6: Final answer
    x = 79,140.15

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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.