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Finding the Fourth Proportional to 153,953.44, 212,437.01 and 85,974.19

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Solution

The fourth proportional to 153,953.44, 212,437.01 and 85,974.19 is: 118,633.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,953.44 : 212,437.01 = 85,974.19 : x
  2. Step 2: Convert to fraction form
    153,953.44/212,437.01 = 85,974.19/x
  3. Step 3: Cross multiply
    153,953.44x = 212,437.01 × 85,974.19
  4. Step 4: Simplify right side
    153,953.44x = 18,264,098,368.72
  5. Step 5: Solve for x
    x = 18,264,098,368.72/153,953.44
  6. Step 6: Final answer
    x = 118,633.91

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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.