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Finding the Fourth Proportional to 354,312.60, 531,468.90 and 144,101.40

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Solution

The fourth proportional to 354,312.60, 531,468.90 and 144,101.40 is: 216,152.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,312.60 : 531,468.90 = 144,101.40 : x
  2. Step 2: Convert to fraction form
    354,312.60/531,468.90 = 144,101.40/x
  3. Step 3: Cross multiply
    354,312.60x = 531,468.90 × 144,101.40
  4. Step 4: Simplify right side
    354,312.60x = 76,585,412,546.46
  5. Step 5: Solve for x
    x = 76,585,412,546.46/354,312.60
  6. Step 6: Final answer
    x = 216,152.10

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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.