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Finding the Fourth Proportional to 425,158.40, 586,760.04 and 317,541.68

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Solution

The fourth proportional to 425,158.40, 586,760.04 and 317,541.68 is: 438,238.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,158.40 : 586,760.04 = 317,541.68 : x
  2. Step 2: Convert to fraction form
    425,158.40/586,760.04 = 317,541.68/x
  3. Step 3: Cross multiply
    425,158.40x = 586,760.04 × 317,541.68
  4. Step 4: Simplify right side
    425,158.40x = 186,320,768,858.47
  5. Step 5: Solve for x
    x = 186,320,768,858.47/425,158.40
  6. Step 6: Final answer
    x = 438,238.48

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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.