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Finding the Fourth Proportional to 107,070.17, 147,756.76 and 61,747.49

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Solution

The fourth proportional to 107,070.17, 147,756.76 and 61,747.49 is: 85,211.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,070.17 : 147,756.76 = 61,747.49 : x
  2. Step 2: Convert to fraction form
    107,070.17/147,756.76 = 61,747.49/x
  3. Step 3: Cross multiply
    107,070.17x = 147,756.76 × 61,747.49
  4. Step 4: Simplify right side
    107,070.17x = 9,123,609,275.56
  5. Step 5: Solve for x
    x = 9,123,609,275.56/107,070.17
  6. Step 6: Final answer
    x = 85,211.50

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1.5x scale

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.