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Finding the Fourth Proportional to 91,703.01, 137,532.63 and 47,306.91

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Solution

The fourth proportional to 91,703.01, 137,532.63 and 47,306.91 is: 70,949.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,703.01 : 137,532.63 = 47,306.91 : x
  2. Step 2: Convert to fraction form
    91,703.01/137,532.63 = 47,306.91/x
  3. Step 3: Cross multiply
    91,703.01x = 137,532.63 × 47,306.91
  4. Step 4: Simplify right side
    91,703.01x = 6,506,243,749.47
  5. Step 5: Solve for x
    x = 6,506,243,749.47/91,703.01
  6. Step 6: Final answer
    x = 70,949.08

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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.