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Finding the Fourth Proportional to 668,000.64, 921,980.04 and 614,200.56

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Solution

The fourth proportional to 668,000.64, 921,980.04 and 614,200.56 is: 847,724.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,000.64 : 921,980.04 = 614,200.56 : x
  2. Step 2: Convert to fraction form
    668,000.64/921,980.04 = 614,200.56/x
  3. Step 3: Cross multiply
    668,000.64x = 921,980.04 × 614,200.56
  4. Step 4: Simplify right side
    668,000.64x = 566,280,656,876.82
  5. Step 5: Solve for x
    x = 566,280,656,876.82/668,000.64
  6. Step 6: Final answer
    x = 847,724.72

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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.