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Finding the Fourth Proportional to 354,924.40, 532,386.60 and 291,938.80

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Solution

The fourth proportional to 354,924.40, 532,386.60 and 291,938.80 is: 437,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,924.40 : 532,386.60 = 291,938.80 : x
  2. Step 2: Convert to fraction form
    354,924.40/532,386.60 = 291,938.80/x
  3. Step 3: Cross multiply
    354,924.40x = 532,386.60 × 291,938.80
  4. Step 4: Simplify right side
    354,924.40x = 155,424,305,140.08
  5. Step 5: Solve for x
    x = 155,424,305,140.08/354,924.40
  6. Step 6: Final answer
    x = 437,908.20

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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.