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Finding the Fourth Proportional to 124,482.10, 186,723.15 and 85,116.10

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Solution

The fourth proportional to 124,482.10, 186,723.15 and 85,116.10 is: 127,674.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,482.10 : 186,723.15 = 85,116.10 : x
  2. Step 2: Convert to fraction form
    124,482.10/186,723.15 = 85,116.10/x
  3. Step 3: Cross multiply
    124,482.10x = 186,723.15 × 85,116.10
  4. Step 4: Simplify right side
    124,482.10x = 15,893,146,307.72
  5. Step 5: Solve for x
    x = 15,893,146,307.72/124,482.10
  6. Step 6: Final answer
    x = 127,674.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.