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Finding the Fourth Proportional to 708,353.92, 977,515.05 and 386,066.26

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Solution

The fourth proportional to 708,353.92, 977,515.05 and 386,066.26 is: 532,764.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,353.92 : 977,515.05 = 386,066.26 : x
  2. Step 2: Convert to fraction form
    708,353.92/977,515.05 = 386,066.26/x
  3. Step 3: Cross multiply
    708,353.92x = 977,515.05 × 386,066.26
  4. Step 4: Simplify right side
    708,353.92x = 377,385,579,447.21
  5. Step 5: Solve for x
    x = 377,385,579,447.21/708,353.92
  6. Step 6: Final answer
    x = 532,764.16

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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.