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Finding the Fourth Proportional to 98,920.74, 136,511.17 and 53,598.76

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Solution

The fourth proportional to 98,920.74, 136,511.17 and 53,598.76 is: 73,966.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,920.74 : 136,511.17 = 53,598.76 : x
  2. Step 2: Convert to fraction form
    98,920.74/136,511.17 = 53,598.76/x
  3. Step 3: Cross multiply
    98,920.74x = 136,511.17 × 53,598.76
  4. Step 4: Simplify right side
    98,920.74x = 7,316,829,168.38
  5. Step 5: Solve for x
    x = 7,316,829,168.38/98,920.74
  6. Step 6: Final answer
    x = 73,966.58

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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.