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Finding the Fourth Proportional to 870,592.59, 1,201,400.91 and 483,387.89

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Solution

The fourth proportional to 870,592.59, 1,201,400.91 and 483,387.89 is: 667,065.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,592.59 : 1,201,400.91 = 483,387.89 : x
  2. Step 2: Convert to fraction form
    870,592.59/1,201,400.91 = 483,387.89/x
  3. Step 3: Cross multiply
    870,592.59x = 1,201,400.91 × 483,387.89
  4. Step 4: Simplify right side
    870,592.59x = 580,742,644,921.98
  5. Step 5: Solve for x
    x = 580,742,644,921.98/870,592.59
  6. Step 6: Final answer
    x = 667,065.92

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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.