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Finding the Fourth Proportional to 223,587.60, 308,594.70 and 128,158.20

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Solution

The fourth proportional to 223,587.60, 308,594.70 and 128,158.20 is: 176,883.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,587.60 : 308,594.70 = 128,158.20 : x
  2. Step 2: Convert to fraction form
    223,587.60/308,594.70 = 128,158.20/x
  3. Step 3: Cross multiply
    223,587.60x = 308,594.70 × 128,158.20
  4. Step 4: Simplify right side
    223,587.60x = 39,548,941,281.54
  5. Step 5: Solve for x
    x = 39,548,941,281.54/223,587.60
  6. Step 6: Final answer
    x = 176,883.43

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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.