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Finding the Fourth Proportional to 586,540.92, 879,803.70 and 143,312.76

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Solution

The fourth proportional to 586,540.92, 879,803.70 and 143,312.76 is: 214,967.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,540.92 : 879,803.70 = 143,312.76 : x
  2. Step 2: Convert to fraction form
    586,540.92/879,803.70 = 143,312.76/x
  3. Step 3: Cross multiply
    586,540.92x = 879,803.70 × 143,312.76
  4. Step 4: Simplify right side
    586,540.92x = 126,087,096,505.21
  5. Step 5: Solve for x
    x = 126,087,096,505.21/586,540.92
  6. Step 6: Final answer
    x = 214,967.26

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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.