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Finding the Fourth Proportional to 312,470.01, 431,235.17 and 176,528.91

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Solution

The fourth proportional to 312,470.01, 431,235.17 and 176,528.91 is: 243,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,470.01 : 431,235.17 = 176,528.91 : x
  2. Step 2: Convert to fraction form
    312,470.01/431,235.17 = 176,528.91/x
  3. Step 3: Cross multiply
    312,470.01x = 431,235.17 × 176,528.91
  4. Step 4: Simplify right side
    312,470.01x = 76,125,473,631.12
  5. Step 5: Solve for x
    x = 76,125,473,631.12/312,470.01
  6. Step 6: Final answer
    x = 243,624.90

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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.