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Finding the Fourth Proportional to 58,661.16, 80,931.18 and 38,528.95

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Solution

The fourth proportional to 58,661.16, 80,931.18 and 38,528.95 is: 53,156.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,661.16 : 80,931.18 = 38,528.95 : x
  2. Step 2: Convert to fraction form
    58,661.16/80,931.18 = 38,528.95/x
  3. Step 3: Cross multiply
    58,661.16x = 80,931.18 × 38,528.95
  4. Step 4: Simplify right side
    58,661.16x = 3,118,193,387.66
  5. Step 5: Solve for x
    x = 3,118,193,387.66/58,661.16
  6. Step 6: Final answer
    x = 53,156.01

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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.