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Finding the Fourth Proportional to 76,648.48, 114,931.03 and 26,715.18

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Solution

The fourth proportional to 76,648.48, 114,931.03 and 26,715.18 is: 40,058.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,648.48 : 114,931.03 = 26,715.18 : x
  2. Step 2: Convert to fraction form
    76,648.48/114,931.03 = 26,715.18/x
  3. Step 3: Cross multiply
    76,648.48x = 114,931.03 × 26,715.18
  4. Step 4: Simplify right side
    76,648.48x = 3,070,402,445.80
  5. Step 5: Solve for x
    x = 3,070,402,445.80/76,648.48
  6. Step 6: Final answer
    x = 40,058.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.