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Finding the Fourth Proportional to 651,387.66, 981,518.80 and 535,651.62

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Solution

The fourth proportional to 651,387.66, 981,518.80 and 535,651.62 is: 807,126.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,387.66 : 981,518.80 = 535,651.62 : x
  2. Step 2: Convert to fraction form
    651,387.66/981,518.80 = 535,651.62/x
  3. Step 3: Cross multiply
    651,387.66x = 981,518.80 × 535,651.62
  4. Step 4: Simplify right side
    651,387.66x = 525,752,135,280.46
  5. Step 5: Solve for x
    x = 525,752,135,280.46/651,387.66
  6. Step 6: Final answer
    x = 807,126.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.