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Finding the Fourth Proportional to 435,710.40, 653,565.60 and 155,236.80

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Solution

The fourth proportional to 435,710.40, 653,565.60 and 155,236.80 is: 232,855.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,710.40 : 653,565.60 = 155,236.80 : x
  2. Step 2: Convert to fraction form
    435,710.40/653,565.60 = 155,236.80/x
  3. Step 3: Cross multiply
    435,710.40x = 653,565.60 × 155,236.80
  4. Step 4: Simplify right side
    435,710.40x = 101,457,432,334.08
  5. Step 5: Solve for x
    x = 101,457,432,334.08/435,710.40
  6. Step 6: Final answer
    x = 232,855.20

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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.