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Finding the Fourth Proportional to 127,509.59, 176,000.29 and 85,068.02

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Solution

The fourth proportional to 127,509.59, 176,000.29 and 85,068.02 is: 117,418.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,509.59 : 176,000.29 = 85,068.02 : x
  2. Step 2: Convert to fraction form
    127,509.59/176,000.29 = 85,068.02/x
  3. Step 3: Cross multiply
    127,509.59x = 176,000.29 × 85,068.02
  4. Step 4: Simplify right side
    127,509.59x = 14,971,995,097.05
  5. Step 5: Solve for x
    x = 14,971,995,097.05/127,509.59
  6. Step 6: Final answer
    x = 117,418.59

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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.