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Finding the Fourth Proportional to 107,656.60, 148,412.14 and 75,726.40

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Solution

The fourth proportional to 107,656.60, 148,412.14 and 75,726.40 is: 104,394.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,656.60 : 148,412.14 = 75,726.40 : x
  2. Step 2: Convert to fraction form
    107,656.60/148,412.14 = 75,726.40/x
  3. Step 3: Cross multiply
    107,656.60x = 148,412.14 × 75,726.40
  4. Step 4: Simplify right side
    107,656.60x = 11,238,717,078.50
  5. Step 5: Solve for x
    x = 11,238,717,078.50/107,656.60
  6. Step 6: Final answer
    x = 104,394.13

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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.