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Finding the Fourth Proportional to 58,697.38, 80,875.64 and 39,801.70

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Solution

The fourth proportional to 58,697.38, 80,875.64 and 39,801.70 is: 54,840.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,697.38 : 80,875.64 = 39,801.70 : x
  2. Step 2: Convert to fraction form
    58,697.38/80,875.64 = 39,801.70/x
  3. Step 3: Cross multiply
    58,697.38x = 80,875.64 × 39,801.70
  4. Step 4: Simplify right side
    58,697.38x = 3,218,987,960.59
  5. Step 5: Solve for x
    x = 3,218,987,960.59/58,697.38
  6. Step 6: Final answer
    x = 54,840.40

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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.