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Finding the Fourth Proportional to 869,658.59, 1,200,141.15 and 525,446.66

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Solution

The fourth proportional to 869,658.59, 1,200,141.15 and 525,446.66 is: 725,123.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,658.59 : 1,200,141.15 = 525,446.66 : x
  2. Step 2: Convert to fraction form
    869,658.59/1,200,141.15 = 525,446.66/x
  3. Step 3: Cross multiply
    869,658.59x = 1,200,141.15 × 525,446.66
  4. Step 4: Simplify right side
    869,658.59x = 630,610,158,796.06
  5. Step 5: Solve for x
    x = 630,610,158,796.06/869,658.59
  6. Step 6: Final answer
    x = 725,123.82

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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.