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Finding the Fourth Proportional to 157,066.77, 216,752.45 and 85,447.11

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Solution

The fourth proportional to 157,066.77, 216,752.45 and 85,447.11 is: 117,917.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,066.77 : 216,752.45 = 85,447.11 : x
  2. Step 2: Convert to fraction form
    157,066.77/216,752.45 = 85,447.11/x
  3. Step 3: Cross multiply
    157,066.77x = 216,752.45 × 85,447.11
  4. Step 4: Simplify right side
    157,066.77x = 18,520,870,437.92
  5. Step 5: Solve for x
    x = 18,520,870,437.92/157,066.77
  6. Step 6: Final answer
    x = 117,917.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.