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Finding the Fourth Proportional to 230,686.11, 318,346.88 and 130,084.11

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Solution

The fourth proportional to 230,686.11, 318,346.88 and 130,084.11 is: 179,516.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,686.11 : 318,346.88 = 130,084.11 : x
  2. Step 2: Convert to fraction form
    230,686.11/318,346.88 = 130,084.11/x
  3. Step 3: Cross multiply
    230,686.11x = 318,346.88 × 130,084.11
  4. Step 4: Simplify right side
    230,686.11x = 41,411,869,905.66
  5. Step 5: Solve for x
    x = 41,411,869,905.66/230,686.11
  6. Step 6: Final answer
    x = 179,516.10

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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.