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Finding the Fourth Proportional to 410,004.80, 615,007.20 and 144,065.60

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Solution

The fourth proportional to 410,004.80, 615,007.20 and 144,065.60 is: 216,098.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,004.80 : 615,007.20 = 144,065.60 : x
  2. Step 2: Convert to fraction form
    410,004.80/615,007.20 = 144,065.60/x
  3. Step 3: Cross multiply
    410,004.80x = 615,007.20 × 144,065.60
  4. Step 4: Simplify right side
    410,004.80x = 88,601,381,272.32
  5. Step 5: Solve for x
    x = 88,601,381,272.32/410,004.80
  6. Step 6: Final answer
    x = 216,098.40

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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.