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Finding the Fourth Proportional to 96,005.70, 144,008.55 and 90,465.30

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Solution

The fourth proportional to 96,005.70, 144,008.55 and 90,465.30 is: 135,697.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,005.70 : 144,008.55 = 90,465.30 : x
  2. Step 2: Convert to fraction form
    96,005.70/144,008.55 = 90,465.30/x
  3. Step 3: Cross multiply
    96,005.70x = 144,008.55 × 90,465.30
  4. Step 4: Simplify right side
    96,005.70x = 13,027,776,678.32
  5. Step 5: Solve for x
    x = 13,027,776,678.32/96,005.70
  6. Step 6: Final answer
    x = 135,697.95

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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.