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Finding the Fourth Proportional to 58,666.61, 80,960.31 and 31,809.53

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Solution

The fourth proportional to 58,666.61, 80,960.31 and 31,809.53 is: 43,897.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,666.61 : 80,960.31 = 31,809.53 : x
  2. Step 2: Convert to fraction form
    58,666.61/80,960.31 = 31,809.53/x
  3. Step 3: Cross multiply
    58,666.61x = 80,960.31 × 31,809.53
  4. Step 4: Simplify right side
    58,666.61x = 2,575,309,612.16
  5. Step 5: Solve for x
    x = 2,575,309,612.16/58,666.61
  6. Step 6: Final answer
    x = 43,897.36

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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.