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Finding the Fourth Proportional to 616,129.20, 922,881.60 and 498,031.20

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Solution

The fourth proportional to 616,129.20, 922,881.60 and 498,031.20 is: 745,986.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,129.20 : 922,881.60 = 498,031.20 : x
  2. Step 2: Convert to fraction form
    616,129.20/922,881.60 = 498,031.20/x
  3. Step 3: Cross multiply
    616,129.20x = 922,881.60 × 498,031.20
  4. Step 4: Simplify right side
    616,129.20x = 459,623,830,705.92
  5. Step 5: Solve for x
    x = 459,623,830,705.92/616,129.20
  6. Step 6: Final answer
    x = 745,986.12

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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.