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Finding the Fourth Proportional to 153,574.11, 211,949.51 and 85,597.29

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Solution

The fourth proportional to 153,574.11, 211,949.51 and 85,597.29 is: 118,133.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,574.11 : 211,949.51 = 85,597.29 : x
  2. Step 2: Convert to fraction form
    153,574.11/211,949.51 = 85,597.29/x
  3. Step 3: Cross multiply
    153,574.11x = 211,949.51 × 85,597.29
  4. Step 4: Simplify right side
    153,574.11x = 18,142,303,244.84
  5. Step 5: Solve for x
    x = 18,142,303,244.84/153,574.11
  6. Step 6: Final answer
    x = 118,133.87

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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.