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Finding the Fourth Proportional to 127,999.68, 176,639.67 and 71,411.07

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Solution

The fourth proportional to 127,999.68, 176,639.67 and 71,411.07 is: 98,547.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,999.68 : 176,639.67 = 71,411.07 : x
  2. Step 2: Convert to fraction form
    127,999.68/176,639.67 = 71,411.07/x
  3. Step 3: Cross multiply
    127,999.68x = 176,639.67 × 71,411.07
  4. Step 4: Simplify right side
    127,999.68x = 12,614,027,839.15
  5. Step 5: Solve for x
    x = 12,614,027,839.15/127,999.68
  6. Step 6: Final answer
    x = 98,547.34

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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.