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Finding the Fourth Proportional to 98,901.38, 136,483.72 and 53,580.49

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Solution

The fourth proportional to 98,901.38, 136,483.72 and 53,580.49 is: 73,940.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,901.38 : 136,483.72 = 53,580.49 : x
  2. Step 2: Convert to fraction form
    98,901.38/136,483.72 = 53,580.49/x
  3. Step 3: Cross multiply
    98,901.38x = 136,483.72 × 53,580.49
  4. Step 4: Simplify right side
    98,901.38x = 7,312,865,209.19
  5. Step 5: Solve for x
    x = 7,312,865,209.19/98,901.38
  6. Step 6: Final answer
    x = 73,940.98

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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.