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Finding the Fourth Proportional to 117,354.72, 176,079.93 and 42,482.78

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Solution

The fourth proportional to 117,354.72, 176,079.93 and 42,482.78 is: 63,741.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,354.72 : 176,079.93 = 42,482.78 : x
  2. Step 2: Convert to fraction form
    117,354.72/176,079.93 = 42,482.78/x
  3. Step 3: Cross multiply
    117,354.72x = 176,079.93 × 42,482.78
  4. Step 4: Simplify right side
    117,354.72x = 7,480,364,549.20
  5. Step 5: Solve for x
    x = 7,480,364,549.20/117,354.72
  6. Step 6: Final answer
    x = 63,741.49

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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.