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Finding the Fourth Proportional to 438,373.80, 657,196.20 and 185,848.20

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Solution

The fourth proportional to 438,373.80, 657,196.20 and 185,848.20 is: 278,617.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,373.80 : 657,196.20 = 185,848.20 : x
  2. Step 2: Convert to fraction form
    438,373.80/657,196.20 = 185,848.20/x
  3. Step 3: Cross multiply
    438,373.80x = 657,196.20 × 185,848.20
  4. Step 4: Simplify right side
    438,373.80x = 122,138,730,816.84
  5. Step 5: Solve for x
    x = 122,138,730,816.84/438,373.80
  6. Step 6: Final answer
    x = 278,617.77

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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.