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Finding the Fourth Proportional to 261,973.80, 392,680.92 and 149,411.64

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Solution

The fourth proportional to 261,973.80, 392,680.92 and 149,411.64 is: 223,957.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,973.80 : 392,680.92 = 149,411.64 : x
  2. Step 2: Convert to fraction form
    261,973.80/392,680.92 = 149,411.64/x
  3. Step 3: Cross multiply
    261,973.80x = 392,680.92 × 149,411.64
  4. Step 4: Simplify right side
    261,973.80x = 58,671,100,253.91
  5. Step 5: Solve for x
    x = 58,671,100,253.91/261,973.80
  6. Step 6: Final answer
    x = 223,957.89

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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.