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Finding the Fourth Proportional to 77,248.50, 106,590.60 and 43,258.47

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Solution

The fourth proportional to 77,248.50, 106,590.60 and 43,258.47 is: 59,689.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,248.50 : 106,590.60 = 43,258.47 : x
  2. Step 2: Convert to fraction form
    77,248.50/106,590.60 = 43,258.47/x
  3. Step 3: Cross multiply
    77,248.50x = 106,590.60 × 43,258.47
  4. Step 4: Simplify right side
    77,248.50x = 4,610,946,272.38
  5. Step 5: Solve for x
    x = 4,610,946,272.38/77,248.50
  6. Step 6: Final answer
    x = 59,689.78

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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.