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Finding the Fourth Proportional to 98,516.50, 135,953.63 and 56,077.76

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Solution

The fourth proportional to 98,516.50, 135,953.63 and 56,077.76 is: 77,387.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,516.50 : 135,953.63 = 56,077.76 : x
  2. Step 2: Convert to fraction form
    98,516.50/135,953.63 = 56,077.76/x
  3. Step 3: Cross multiply
    98,516.50x = 135,953.63 × 56,077.76
  4. Step 4: Simplify right side
    98,516.50x = 7,623,975,034.27
  5. Step 5: Solve for x
    x = 7,623,975,034.27/98,516.50
  6. Step 6: Final answer
    x = 77,387.80

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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.