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Finding the Fourth Proportional to 153,017.87, 211,164.75 and 85,041.17

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Solution

The fourth proportional to 153,017.87, 211,164.75 and 85,041.17 is: 117,356.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,017.87 : 211,164.75 = 85,041.17 : x
  2. Step 2: Convert to fraction form
    153,017.87/211,164.75 = 85,041.17/x
  3. Step 3: Cross multiply
    153,017.87x = 211,164.75 × 85,041.17
  4. Step 4: Simplify right side
    153,017.87x = 17,957,696,346.93
  5. Step 5: Solve for x
    x = 17,957,696,346.93/153,017.87
  6. Step 6: Final answer
    x = 117,356.86

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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.