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Finding the Fourth Proportional to 127,651.90, 176,154.87 and 71,062.06

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Solution

The fourth proportional to 127,651.90, 176,154.87 and 71,062.06 is: 98,063.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,651.90 : 176,154.87 = 71,062.06 : x
  2. Step 2: Convert to fraction form
    127,651.90/176,154.87 = 71,062.06/x
  3. Step 3: Cross multiply
    127,651.90x = 176,154.87 × 71,062.06
  4. Step 4: Simplify right side
    127,651.90x = 12,517,927,941.23
  5. Step 5: Solve for x
    x = 12,517,927,941.23/127,651.90
  6. Step 6: Final answer
    x = 98,063.00

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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.