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Finding the Fourth Proportional to 107,720.46, 148,632.48 and 65,254.32

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Solution

The fourth proportional to 107,720.46, 148,632.48 and 65,254.32 is: 90,037.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,720.46 : 148,632.48 = 65,254.32 : x
  2. Step 2: Convert to fraction form
    107,720.46/148,632.48 = 65,254.32/x
  3. Step 3: Cross multiply
    107,720.46x = 148,632.48 × 65,254.32
  4. Step 4: Simplify right side
    107,720.46x = 9,698,911,412.31
  5. Step 5: Solve for x
    x = 9,698,911,412.31/107,720.46
  6. Step 6: Final answer
    x = 90,037.78

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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.