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Finding the Fourth Proportional to 91,062.72, 125,678.88 and 53,352

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Solution

The fourth proportional to 91,062.72, 125,678.88 and 53,352 is: 73,632.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,062.72 : 125,678.88 = 53,352 : x
  2. Step 2: Convert to fraction form
    91,062.72/125,678.88 = 53,352/x
  3. Step 3: Cross multiply
    91,062.72x = 125,678.88 × 53,352
  4. Step 4: Simplify right side
    91,062.72x = 6,705,219,605.76
  5. Step 5: Solve for x
    x = 6,705,219,605.76/91,062.72
  6. Step 6: Final answer
    x = 73,632.98

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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.