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Finding the Fourth Proportional to 354,911.40, 532,367.10 and 291,925.80

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Solution

The fourth proportional to 354,911.40, 532,367.10 and 291,925.80 is: 437,888.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,911.40 : 532,367.10 = 291,925.80 : x
  2. Step 2: Convert to fraction form
    354,911.40/532,367.10 = 291,925.80/x
  3. Step 3: Cross multiply
    354,911.40x = 532,367.10 × 291,925.80
  4. Step 4: Simplify right side
    354,911.40x = 155,411,691,561.18
  5. Step 5: Solve for x
    x = 155,411,691,561.18/354,911.40
  6. Step 6: Final answer
    x = 437,888.70

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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.