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Finding the Fourth Proportional to 61,838.71, 85,337.45 and 34,980.65

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Solution

The fourth proportional to 61,838.71, 85,337.45 and 34,980.65 is: 48,273.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,838.71 : 85,337.45 = 34,980.65 : x
  2. Step 2: Convert to fraction form
    61,838.71/85,337.45 = 34,980.65/x
  3. Step 3: Cross multiply
    61,838.71x = 85,337.45 × 34,980.65
  4. Step 4: Simplify right side
    61,838.71x = 2,985,159,508.78
  5. Step 5: Solve for x
    x = 2,985,159,508.78/61,838.71
  6. Step 6: Final answer
    x = 48,273.32

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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.