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Finding the Fourth Proportional to 124,461.60, 186,465.60 and 71,714.40

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Solution

The fourth proportional to 124,461.60, 186,465.60 and 71,714.40 is: 107,440.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,461.60 : 186,465.60 = 71,714.40 : x
  2. Step 2: Convert to fraction form
    124,461.60/186,465.60 = 71,714.40/x
  3. Step 3: Cross multiply
    124,461.60x = 186,465.60 × 71,714.40
  4. Step 4: Simplify right side
    124,461.60x = 13,372,268,624.64
  5. Step 5: Solve for x
    x = 13,372,268,624.64/124,461.60
  6. Step 6: Final answer
    x = 107,440.92

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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.