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Finding the Fourth Proportional to 515,635.58, 711,707.90 and 352,358.20

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Solution

The fourth proportional to 515,635.58, 711,707.90 and 352,358.20 is: 486,343.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,635.58 : 711,707.90 = 352,358.20 : x
  2. Step 2: Convert to fraction form
    515,635.58/711,707.90 = 352,358.20/x
  3. Step 3: Cross multiply
    515,635.58x = 711,707.90 × 352,358.20
  4. Step 4: Simplify right side
    515,635.58x = 250,776,114,569.78
  5. Step 5: Solve for x
    x = 250,776,114,569.78/515,635.58
  6. Step 6: Final answer
    x = 486,343.70

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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.