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Finding the Fourth Proportional to 90,225.66, 124,494.12 and 49,937.52

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Solution

The fourth proportional to 90,225.66, 124,494.12 and 49,937.52 is: 68,904.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,225.66 : 124,494.12 = 49,937.52 : x
  2. Step 2: Convert to fraction form
    90,225.66/124,494.12 = 49,937.52/x
  3. Step 3: Cross multiply
    90,225.66x = 124,494.12 × 49,937.52
  4. Step 4: Simplify right side
    90,225.66x = 6,216,927,607.38
  5. Step 5: Solve for x
    x = 6,216,927,607.38/90,225.66
  6. Step 6: Final answer
    x = 68,904.21

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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.