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Finding the Fourth Proportional to 391,030.46, 586,572.32 and 124,811.02

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Solution

The fourth proportional to 391,030.46, 586,572.32 and 124,811.02 is: 187,225.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,030.46 : 586,572.32 = 124,811.02 : x
  2. Step 2: Convert to fraction form
    391,030.46/586,572.32 = 124,811.02/x
  3. Step 3: Cross multiply
    391,030.46x = 586,572.32 × 124,811.02
  4. Step 4: Simplify right side
    391,030.46x = 73,210,689,562.97
  5. Step 5: Solve for x
    x = 73,210,689,562.97/391,030.46
  6. Step 6: Final answer
    x = 187,225.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.