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Finding the Fourth Proportional to 58,888.39, 81,258.61 and 39,809.66

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Solution

The fourth proportional to 58,888.39, 81,258.61 and 39,809.66 is: 54,932.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,888.39 : 81,258.61 = 39,809.66 : x
  2. Step 2: Convert to fraction form
    58,888.39/81,258.61 = 39,809.66/x
  3. Step 3: Cross multiply
    58,888.39x = 81,258.61 × 39,809.66
  4. Step 4: Simplify right side
    58,888.39x = 3,234,877,636.17
  5. Step 5: Solve for x
    x = 3,234,877,636.17/58,888.39
  6. Step 6: Final answer
    x = 54,932.35

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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.