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Finding the Fourth Proportional to 359,117.12, 495,585.12 and 197,978.24

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Solution

The fourth proportional to 359,117.12, 495,585.12 and 197,978.24 is: 273,211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,117.12 : 495,585.12 = 197,978.24 : x
  2. Step 2: Convert to fraction form
    359,117.12/495,585.12 = 197,978.24/x
  3. Step 3: Cross multiply
    359,117.12x = 495,585.12 × 197,978.24
  4. Step 4: Simplify right side
    359,117.12x = 98,115,069,827.79
  5. Step 5: Solve for x
    x = 98,115,069,827.79/359,117.12
  6. Step 6: Final answer
    x = 273,211.90

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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.