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Finding the Fourth Proportional to 638,277.60, 956,152.80 and 413,794.20

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Solution

The fourth proportional to 638,277.60, 956,152.80 and 413,794.20 is: 619,872.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,277.60 : 956,152.80 = 413,794.20 : x
  2. Step 2: Convert to fraction form
    638,277.60/956,152.80 = 413,794.20/x
  3. Step 3: Cross multiply
    638,277.60x = 956,152.80 × 413,794.20
  4. Step 4: Simplify right side
    638,277.60x = 395,650,482,953.76
  5. Step 5: Solve for x
    x = 395,650,482,953.76/638,277.60
  6. Step 6: Final answer
    x = 619,872.11

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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.