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Finding the Fourth Proportional to 67,209.34, 92,750.16 and 38,931.40

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Solution

The fourth proportional to 67,209.34, 92,750.16 and 38,931.40 is: 53,726.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,209.34 : 92,750.16 = 38,931.40 : x
  2. Step 2: Convert to fraction form
    67,209.34/92,750.16 = 38,931.40/x
  3. Step 3: Cross multiply
    67,209.34x = 92,750.16 × 38,931.40
  4. Step 4: Simplify right side
    67,209.34x = 3,610,893,579.02
  5. Step 5: Solve for x
    x = 3,610,893,579.02/67,209.34
  6. Step 6: Final answer
    x = 53,726.07

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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.