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Finding the Fourth Proportional to 867,126.69, 1,196,535 and 499,657.38

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Solution

The fourth proportional to 867,126.69, 1,196,535 and 499,657.38 is: 689,469.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,126.69 : 1,196,535 = 499,657.38 : x
  2. Step 2: Convert to fraction form
    867,126.69/1,196,535 = 499,657.38/x
  3. Step 3: Cross multiply
    867,126.69x = 1,196,535 × 499,657.38
  4. Step 4: Simplify right side
    867,126.69x = 597,857,543,178.30
  5. Step 5: Solve for x
    x = 597,857,543,178.30/867,126.69
  6. Step 6: Final answer
    x = 689,469.66

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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.