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Finding the Fourth Proportional to 111,470.76, 153,882.57 and 70,655.28

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Solution

The fourth proportional to 111,470.76, 153,882.57 and 70,655.28 is: 97,537.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,470.76 : 153,882.57 = 70,655.28 : x
  2. Step 2: Convert to fraction form
    111,470.76/153,882.57 = 70,655.28/x
  3. Step 3: Cross multiply
    111,470.76x = 153,882.57 × 70,655.28
  4. Step 4: Simplify right side
    111,470.76x = 10,872,616,070.47
  5. Step 5: Solve for x
    x = 10,872,616,070.47/111,470.76
  6. Step 6: Final answer
    x = 97,537.83

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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.