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Finding the Fourth Proportional to 617,140.77, 925,008.48 and 386,437.59

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Solution

The fourth proportional to 617,140.77, 925,008.48 and 386,437.59 is: 579,216.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,140.77 : 925,008.48 = 386,437.59 : x
  2. Step 2: Convert to fraction form
    617,140.77/925,008.48 = 386,437.59/x
  3. Step 3: Cross multiply
    617,140.77x = 925,008.48 × 386,437.59
  4. Step 4: Simplify right side
    617,140.77x = 357,458,047,740.76
  5. Step 5: Solve for x
    x = 357,458,047,740.76/617,140.77
  6. Step 6: Final answer
    x = 579,216.39

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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.