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Finding the Fourth Proportional to 93,717.28, 140,913.12 and 86,411.12

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Solution

The fourth proportional to 93,717.28, 140,913.12 and 86,411.12 is: 129,927.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,717.28 : 140,913.12 = 86,411.12 : x
  2. Step 2: Convert to fraction form
    93,717.28/140,913.12 = 86,411.12/x
  3. Step 3: Cross multiply
    93,717.28x = 140,913.12 × 86,411.12
  4. Step 4: Simplify right side
    93,717.28x = 12,176,460,521.89
  5. Step 5: Solve for x
    x = 12,176,460,521.89/93,717.28
  6. Step 6: Final answer
    x = 129,927.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.