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Finding the Fourth Proportional to 103,357.70, 155,036.55 and 96,359.30

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Solution

The fourth proportional to 103,357.70, 155,036.55 and 96,359.30 is: 144,538.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,357.70 : 155,036.55 = 96,359.30 : x
  2. Step 2: Convert to fraction form
    103,357.70/155,036.55 = 96,359.30/x
  3. Step 3: Cross multiply
    103,357.70x = 155,036.55 × 96,359.30
  4. Step 4: Simplify right side
    103,357.70x = 14,939,213,432.42
  5. Step 5: Solve for x
    x = 14,939,213,432.42/103,357.70
  6. Step 6: Final answer
    x = 144,538.95

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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.