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Finding the Fourth Proportional to 1,139,706.92, 1,572,834.40 and 649,748.90

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Solution

The fourth proportional to 1,139,706.92, 1,572,834.40 and 649,748.90 is: 896,675.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,706.92 : 1,572,834.40 = 649,748.90 : x
  2. Step 2: Convert to fraction form
    1,139,706.92/1,572,834.40 = 649,748.90/x
  3. Step 3: Cross multiply
    1,139,706.92x = 1,572,834.40 × 649,748.90
  4. Step 4: Simplify right side
    1,139,706.92x = 1,021,947,421,282.16
  5. Step 5: Solve for x
    x = 1,021,947,421,282.16/1,139,706.92
  6. Step 6: Final answer
    x = 896,675.63

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.