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Finding the Fourth Proportional to 67,347.90, 92,921.91 and 38,275.86

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Solution

The fourth proportional to 67,347.90, 92,921.91 and 38,275.86 is: 52,810.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,347.90 : 92,921.91 = 38,275.86 : x
  2. Step 2: Convert to fraction form
    67,347.90/92,921.91 = 38,275.86/x
  3. Step 3: Cross multiply
    67,347.90x = 92,921.91 × 38,275.86
  4. Step 4: Simplify right side
    67,347.90x = 3,556,666,018.09
  5. Step 5: Solve for x
    x = 3,556,666,018.09/67,347.90
  6. Step 6: Final answer
    x = 52,810.35

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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.