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Finding the Fourth Proportional to 615,048.86, 922,638.92 and 260,098.76

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Solution

The fourth proportional to 615,048.86, 922,638.92 and 260,098.76 is: 390,175.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,048.86 : 922,638.92 = 260,098.76 : x
  2. Step 2: Convert to fraction form
    615,048.86/922,638.92 = 260,098.76/x
  3. Step 3: Cross multiply
    615,048.86x = 922,638.92 × 260,098.76
  4. Step 4: Simplify right side
    615,048.86x = 239,977,240,025.84
  5. Step 5: Solve for x
    x = 239,977,240,025.84/615,048.86
  6. Step 6: Final answer
    x = 390,175.89

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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.