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Finding the Fourth Proportional to 86,505.60, 129,712.15 and 44,368.48

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Solution

The fourth proportional to 86,505.60, 129,712.15 and 44,368.48 is: 66,529.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,505.60 : 129,712.15 = 44,368.48 : x
  2. Step 2: Convert to fraction form
    86,505.60/129,712.15 = 44,368.48/x
  3. Step 3: Cross multiply
    86,505.60x = 129,712.15 × 44,368.48
  4. Step 4: Simplify right side
    86,505.60x = 5,755,130,933.03
  5. Step 5: Solve for x
    x = 5,755,130,933.03/86,505.60
  6. Step 6: Final answer
    x = 66,529.00

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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.