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Finding the Fourth Proportional to 74,866.59, 103,192.80 and 53,070.18

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Solution

The fourth proportional to 74,866.59, 103,192.80 and 53,070.18 is: 73,149.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,866.59 : 103,192.80 = 53,070.18 : x
  2. Step 2: Convert to fraction form
    74,866.59/103,192.80 = 53,070.18/x
  3. Step 3: Cross multiply
    74,866.59x = 103,192.80 × 53,070.18
  4. Step 4: Simplify right side
    74,866.59x = 5,476,460,470.70
  5. Step 5: Solve for x
    x = 5,476,460,470.70/74,866.59
  6. Step 6: Final answer
    x = 73,149.59

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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.