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Finding the Fourth Proportional to 539,000.80, 808,387.80 and 272,510.80

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Solution

The fourth proportional to 539,000.80, 808,387.80 and 272,510.80 is: 408,708.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,000.80 : 808,387.80 = 272,510.80 : x
  2. Step 2: Convert to fraction form
    539,000.80/808,387.80 = 272,510.80/x
  3. Step 3: Cross multiply
    539,000.80x = 808,387.80 × 272,510.80
  4. Step 4: Simplify right side
    539,000.80x = 220,294,406,088.24
  5. Step 5: Solve for x
    x = 220,294,406,088.24/539,000.80
  6. Step 6: Final answer
    x = 408,708.87

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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.