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Finding the Fourth Proportional to 358,959.60, 538,876.80 and 356,335.20

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Solution

The fourth proportional to 358,959.60, 538,876.80 and 356,335.20 is: 534,937.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,959.60 : 538,876.80 = 356,335.20 : x
  2. Step 2: Convert to fraction form
    358,959.60/538,876.80 = 356,335.20/x
  3. Step 3: Cross multiply
    358,959.60x = 538,876.80 × 356,335.20
  4. Step 4: Simplify right side
    358,959.60x = 192,020,772,303.36
  5. Step 5: Solve for x
    x = 192,020,772,303.36/358,959.60
  6. Step 6: Final answer
    x = 534,937.00

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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.