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Finding the Fourth Proportional to 423,236.16, 634,613.52 and 327,139.32

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Solution

The fourth proportional to 423,236.16, 634,613.52 and 327,139.32 is: 490,522.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,236.16 : 634,613.52 = 327,139.32 : x
  2. Step 2: Convert to fraction form
    423,236.16/634,613.52 = 327,139.32/x
  3. Step 3: Cross multiply
    423,236.16x = 634,613.52 × 327,139.32
  4. Step 4: Simplify right side
    423,236.16x = 207,607,035,395.61
  5. Step 5: Solve for x
    x = 207,607,035,395.61/423,236.16
  6. Step 6: Final answer
    x = 490,522.92

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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.