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Finding the Fourth Proportional to 714,630.59, 986,197.29 and 387,946.13

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Solution

The fourth proportional to 714,630.59, 986,197.29 and 387,946.13 is: 535,369.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,630.59 : 986,197.29 = 387,946.13 : x
  2. Step 2: Convert to fraction form
    714,630.59/986,197.29 = 387,946.13/x
  3. Step 3: Cross multiply
    714,630.59x = 986,197.29 × 387,946.13
  4. Step 4: Simplify right side
    714,630.59x = 382,591,417,141.00
  5. Step 5: Solve for x
    x = 382,591,417,141.00/714,630.59
  6. Step 6: Final answer
    x = 535,369.50

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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.