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Finding the Fourth Proportional to 77,655.68, 107,167.20 and 45,851.84

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Solution

The fourth proportional to 77,655.68, 107,167.20 and 45,851.84 is: 63,276.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,655.68 : 107,167.20 = 45,851.84 : x
  2. Step 2: Convert to fraction form
    77,655.68/107,167.20 = 45,851.84/x
  3. Step 3: Cross multiply
    77,655.68x = 107,167.20 × 45,851.84
  4. Step 4: Simplify right side
    77,655.68x = 4,913,813,307.65
  5. Step 5: Solve for x
    x = 4,913,813,307.65/77,655.68
  6. Step 6: Final answer
    x = 63,276.93

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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.