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Finding the Fourth Proportional to 189,432.93, 261,348.93 and 145,838.88

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Solution

The fourth proportional to 189,432.93, 261,348.93 and 145,838.88 is: 201,204.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,432.93 : 261,348.93 = 145,838.88 : x
  2. Step 2: Convert to fraction form
    189,432.93/261,348.93 = 145,838.88/x
  3. Step 3: Cross multiply
    189,432.93x = 261,348.93 × 145,838.88
  4. Step 4: Simplify right side
    189,432.93x = 38,114,835,240.40
  5. Step 5: Solve for x
    x = 38,114,835,240.40/189,432.93
  6. Step 6: Final answer
    x = 201,204.91

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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.