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Finding the Fourth Proportional to 837,411.12, 1,155,220.56 and 497,638.80

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Solution

The fourth proportional to 837,411.12, 1,155,220.56 and 497,638.80 is: 686,499.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    837,411.12 : 1,155,220.56 = 497,638.80 : x
  2. Step 2: Convert to fraction form
    837,411.12/1,155,220.56 = 497,638.80/x
  3. Step 3: Cross multiply
    837,411.12x = 1,155,220.56 × 497,638.80
  4. Step 4: Simplify right side
    837,411.12x = 574,882,573,213.73
  5. Step 5: Solve for x
    x = 574,882,573,213.73/837,411.12
  6. Step 6: Final answer
    x = 686,499.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.