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Finding the Fourth Proportional to 148,712.90, 205,068.53 and 88,271.92

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Solution

The fourth proportional to 148,712.90, 205,068.53 and 88,271.92 is: 121,723.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,712.90 : 205,068.53 = 88,271.92 : x
  2. Step 2: Convert to fraction form
    148,712.90/205,068.53 = 88,271.92/x
  3. Step 3: Cross multiply
    148,712.90x = 205,068.53 × 88,271.92
  4. Step 4: Simplify right side
    148,712.90x = 18,101,792,582.69
  5. Step 5: Solve for x
    x = 18,101,792,582.69/148,712.90
  6. Step 6: Final answer
    x = 121,723.08

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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.