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Finding the Fourth Proportional to 85,113.40, 127,670.10 and 58,869.40

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Solution

The fourth proportional to 85,113.40, 127,670.10 and 58,869.40 is: 88,304.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,113.40 : 127,670.10 = 58,869.40 : x
  2. Step 2: Convert to fraction form
    85,113.40/127,670.10 = 58,869.40/x
  3. Step 3: Cross multiply
    85,113.40x = 127,670.10 × 58,869.40
  4. Step 4: Simplify right side
    85,113.40x = 7,515,862,184.94
  5. Step 5: Solve for x
    x = 7,515,862,184.94/85,113.40
  6. Step 6: Final answer
    x = 88,304.10

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1.5x scale

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.