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Finding the Fourth Proportional to 74,603.68, 102,966.88 and 42,772.80

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Solution

The fourth proportional to 74,603.68, 102,966.88 and 42,772.80 is: 59,034.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,603.68 : 102,966.88 = 42,772.80 : x
  2. Step 2: Convert to fraction form
    74,603.68/102,966.88 = 42,772.80/x
  3. Step 3: Cross multiply
    74,603.68x = 102,966.88 × 42,772.80
  4. Step 4: Simplify right side
    74,603.68x = 4,404,181,764.86
  5. Step 5: Solve for x
    x = 4,404,181,764.86/74,603.68
  6. Step 6: Final answer
    x = 59,034.38

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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.