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Finding the Fourth Proportional to 98,547.20, 147,650.70 and 45,848.60

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Solution

The fourth proportional to 98,547.20, 147,650.70 and 45,848.60 is: 68,693.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,547.20 : 147,650.70 = 45,848.60 : x
  2. Step 2: Convert to fraction form
    98,547.20/147,650.70 = 45,848.60/x
  3. Step 3: Cross multiply
    98,547.20x = 147,650.70 × 45,848.60
  4. Step 4: Simplify right side
    98,547.20x = 6,769,577,884.02
  5. Step 5: Solve for x
    x = 6,769,577,884.02/98,547.20
  6. Step 6: Final answer
    x = 68,693.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.