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Finding the Fourth Proportional to 111,530.71, 153,913.49 and 60,543.84

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Solution

The fourth proportional to 111,530.71, 153,913.49 and 60,543.84 is: 83,551.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,530.71 : 153,913.49 = 60,543.84 : x
  2. Step 2: Convert to fraction form
    111,530.71/153,913.49 = 60,543.84/x
  3. Step 3: Cross multiply
    111,530.71x = 153,913.49 × 60,543.84
  4. Step 4: Simplify right side
    111,530.71x = 9,318,513,518.41
  5. Step 5: Solve for x
    x = 9,318,513,518.41/111,530.71
  6. Step 6: Final answer
    x = 83,551.10

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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.