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Finding the Fourth Proportional to 125,552, 173,277.16 and 72,560

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Solution

The fourth proportional to 125,552, 173,277.16 and 72,560 is: 100,141.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,552 : 173,277.16 = 72,560 : x
  2. Step 2: Convert to fraction form
    125,552/173,277.16 = 72,560/x
  3. Step 3: Cross multiply
    125,552x = 173,277.16 × 72,560
  4. Step 4: Simplify right side
    125,552x = 12,572,990,729.60
  5. Step 5: Solve for x
    x = 12,572,990,729.60/125,552
  6. Step 6: Final answer
    x = 100,141.70

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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.