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Finding the Fourth Proportional to 67,931.19, 101,864.00 and 28,477.71

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Solution

The fourth proportional to 67,931.19, 101,864.00 and 28,477.71 is: 42,702.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,931.19 : 101,864.00 = 28,477.71 : x
  2. Step 2: Convert to fraction form
    67,931.19/101,864.00 = 28,477.71/x
  3. Step 3: Cross multiply
    67,931.19x = 101,864.00 × 28,477.71
  4. Step 4: Simplify right side
    67,931.19x = 2,900,853,522.63
  5. Step 5: Solve for x
    x = 2,900,853,522.63/67,931.19
  6. Step 6: Final answer
    x = 42,702.82

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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.