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Finding the Fourth Proportional to 98,488.64, 136,831.88 and 97,307.66

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Solution

The fourth proportional to 98,488.64, 136,831.88 and 97,307.66 is: 135,191.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,488.64 : 136,831.88 = 97,307.66 : x
  2. Step 2: Convert to fraction form
    98,488.64/136,831.88 = 97,307.66/x
  3. Step 3: Cross multiply
    98,488.64x = 136,831.88 × 97,307.66
  4. Step 4: Simplify right side
    98,488.64x = 13,314,790,056.20
  5. Step 5: Solve for x
    x = 13,314,790,056.20/98,488.64
  6. Step 6: Final answer
    x = 135,191.13

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.