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Finding the Fourth Proportional to 74,897.61, 103,359.50 and 40,907.08

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Solution

The fourth proportional to 74,897.61, 103,359.50 and 40,907.08 is: 56,452.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,897.61 : 103,359.50 = 40,907.08 : x
  2. Step 2: Convert to fraction form
    74,897.61/103,359.50 = 40,907.08/x
  3. Step 3: Cross multiply
    74,897.61x = 103,359.50 × 40,907.08
  4. Step 4: Simplify right side
    74,897.61x = 4,228,135,335.26
  5. Step 5: Solve for x
    x = 4,228,135,335.26/74,897.61
  6. Step 6: Final answer
    x = 56,452.21

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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.