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Finding the Fourth Proportional to 145,886.76, 218,682.41 and 98,385.12

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Solution

The fourth proportional to 145,886.76, 218,682.41 and 98,385.12 is: 147,478.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,886.76 : 218,682.41 = 98,385.12 : x
  2. Step 2: Convert to fraction form
    145,886.76/218,682.41 = 98,385.12/x
  3. Step 3: Cross multiply
    145,886.76x = 218,682.41 × 98,385.12
  4. Step 4: Simplify right side
    145,886.76x = 21,515,094,657.81
  5. Step 5: Solve for x
    x = 21,515,094,657.81/145,886.76
  6. Step 6: Final answer
    x = 147,478.05

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1.5x scale

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.