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Finding the Fourth Proportional to 86,114.61, 129,123.32 and 26,934.39

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Solution

The fourth proportional to 86,114.61, 129,123.32 and 26,934.39 is: 40,386.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,114.61 : 129,123.32 = 26,934.39 : x
  2. Step 2: Convert to fraction form
    86,114.61/129,123.32 = 26,934.39/x
  3. Step 3: Cross multiply
    86,114.61x = 129,123.32 × 26,934.39
  4. Step 4: Simplify right side
    86,114.61x = 3,477,857,724.30
  5. Step 5: Solve for x
    x = 3,477,857,724.30/86,114.61
  6. Step 6: Final answer
    x = 40,386.38

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1.5x scale

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.