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Finding the Fourth Proportional to 166,642.96, 229,931.72 and 98,681.28

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Solution

The fourth proportional to 166,642.96, 229,931.72 and 98,681.28 is: 136,159.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,642.96 : 229,931.72 = 98,681.28 : x
  2. Step 2: Convert to fraction form
    166,642.96/229,931.72 = 98,681.28/x
  3. Step 3: Cross multiply
    166,642.96x = 229,931.72 × 98,681.28
  4. Step 4: Simplify right side
    166,642.96x = 22,689,956,442.20
  5. Step 5: Solve for x
    x = 22,689,956,442.20/166,642.96
  6. Step 6: Final answer
    x = 136,159.11

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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.