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Finding the Fourth Proportional to 261,657.20, 392,923.20 and 173,302.40

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Solution

The fourth proportional to 261,657.20, 392,923.20 and 173,302.40 is: 260,243.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,657.20 : 392,923.20 = 173,302.40 : x
  2. Step 2: Convert to fraction form
    261,657.20/392,923.20 = 173,302.40/x
  3. Step 3: Cross multiply
    261,657.20x = 392,923.20 × 173,302.40
  4. Step 4: Simplify right side
    261,657.20x = 68,094,533,575.68
  5. Step 5: Solve for x
    x = 68,094,533,575.68/261,657.20
  6. Step 6: Final answer
    x = 260,243.30

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1.5x scale

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.