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Finding the Fourth Proportional to 410,385.60, 615,664.80 and 173,606.40

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Solution

The fourth proportional to 410,385.60, 615,664.80 and 173,606.40 is: 260,446.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,385.60 : 615,664.80 = 173,606.40 : x
  2. Step 2: Convert to fraction form
    410,385.60/615,664.80 = 173,606.40/x
  3. Step 3: Cross multiply
    410,385.60x = 615,664.80 × 173,606.40
  4. Step 4: Simplify right side
    410,385.60x = 106,883,349,534.72
  5. Step 5: Solve for x
    x = 106,883,349,534.72/410,385.60
  6. Step 6: Final answer
    x = 260,446.15

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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.