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Finding the Fourth Proportional to 98,901.53, 136,483.55 and 53,580.40

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Solution

The fourth proportional to 98,901.53, 136,483.55 and 53,580.40 is: 73,940.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,901.53 : 136,483.55 = 53,580.40 : x
  2. Step 2: Convert to fraction form
    98,901.53/136,483.55 = 53,580.40/x
  3. Step 3: Cross multiply
    98,901.53x = 136,483.55 × 53,580.40
  4. Step 4: Simplify right side
    98,901.53x = 7,312,842,794.24
  5. Step 5: Solve for x
    x = 7,312,842,794.24/98,901.53
  6. Step 6: Final answer
    x = 73,940.64

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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.