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Finding the Fourth Proportional to 147,856.70, 221,894.40 and 97,920.20

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Solution

The fourth proportional to 147,856.70, 221,894.40 and 97,920.20 is: 146,952.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,856.70 : 221,894.40 = 97,920.20 : x
  2. Step 2: Convert to fraction form
    147,856.70/221,894.40 = 97,920.20/x
  3. Step 3: Cross multiply
    147,856.70x = 221,894.40 × 97,920.20
  4. Step 4: Simplify right side
    147,856.70x = 21,727,944,026.88
  5. Step 5: Solve for x
    x = 21,727,944,026.88/147,856.70
  6. Step 6: Final answer
    x = 146,952.72

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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.