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Finding the Fourth Proportional to 117,643.60, 176,465.40 and 70,872.40

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Solution

The fourth proportional to 117,643.60, 176,465.40 and 70,872.40 is: 106,308.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,643.60 : 176,465.40 = 70,872.40 : x
  2. Step 2: Convert to fraction form
    117,643.60/176,465.40 = 70,872.40/x
  3. Step 3: Cross multiply
    117,643.60x = 176,465.40 × 70,872.40
  4. Step 4: Simplify right side
    117,643.60x = 12,506,526,414.96
  5. Step 5: Solve for x
    x = 12,506,526,414.96/117,643.60
  6. Step 6: Final answer
    x = 106,308.60

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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.