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Finding the Fourth Proportional to 312,113.85, 430,718.61 and 176,153.52

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Solution

The fourth proportional to 312,113.85, 430,718.61 and 176,153.52 is: 243,092.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,113.85 : 430,718.61 = 176,153.52 : x
  2. Step 2: Convert to fraction form
    312,113.85/430,718.61 = 176,153.52/x
  3. Step 3: Cross multiply
    312,113.85x = 430,718.61 × 176,153.52
  4. Step 4: Simplify right side
    312,113.85x = 75,872,599,281.01
  5. Step 5: Solve for x
    x = 75,872,599,281.01/312,113.85
  6. Step 6: Final answer
    x = 243,092.70

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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.