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Finding the Fourth Proportional to 178,989.76, 247,009.86 and 98,412.16

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Solution

The fourth proportional to 178,989.76, 247,009.86 and 98,412.16 is: 135,810.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,989.76 : 247,009.86 = 98,412.16 : x
  2. Step 2: Convert to fraction form
    178,989.76/247,009.86 = 98,412.16/x
  3. Step 3: Cross multiply
    178,989.76x = 247,009.86 × 98,412.16
  4. Step 4: Simplify right side
    178,989.76x = 24,308,773,863.90
  5. Step 5: Solve for x
    x = 24,308,773,863.90/178,989.76
  6. Step 6: Final answer
    x = 135,810.98

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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.