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Finding the Fourth Proportional to 474,934.64, 655,410 and 260,088.08

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Solution

The fourth proportional to 474,934.64, 655,410 and 260,088.08 is: 358,921.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,934.64 : 655,410 = 260,088.08 : x
  2. Step 2: Convert to fraction form
    474,934.64/655,410 = 260,088.08/x
  3. Step 3: Cross multiply
    474,934.64x = 655,410 × 260,088.08
  4. Step 4: Simplify right side
    474,934.64x = 170,464,328,512.80
  5. Step 5: Solve for x
    x = 170,464,328,512.80/474,934.64
  6. Step 6: Final answer
    x = 358,921.66

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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.