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Finding the Fourth Proportional to 265,981.20, 398,315.70 and 176,751.60

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Solution

The fourth proportional to 265,981.20, 398,315.70 and 176,751.60 is: 264,691.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,981.20 : 398,315.70 = 176,751.60 : x
  2. Step 2: Convert to fraction form
    265,981.20/398,315.70 = 176,751.60/x
  3. Step 3: Cross multiply
    265,981.20x = 398,315.70 × 176,751.60
  4. Step 4: Simplify right side
    265,981.20x = 70,402,937,280.12
  5. Step 5: Solve for x
    x = 70,402,937,280.12/265,981.20
  6. Step 6: Final answer
    x = 264,691.40

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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.