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Finding the Fourth Proportional to 714,201.03, 985,596.84 and 391,931.40

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Solution

The fourth proportional to 714,201.03, 985,596.84 and 391,931.40 is: 540,865.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,201.03 : 985,596.84 = 391,931.40 : x
  2. Step 2: Convert to fraction form
    714,201.03/985,596.84 = 391,931.40/x
  3. Step 3: Cross multiply
    714,201.03x = 985,596.84 × 391,931.40
  4. Step 4: Simplify right side
    714,201.03x = 386,286,349,336.78
  5. Step 5: Solve for x
    x = 386,286,349,336.78/714,201.03
  6. Step 6: Final answer
    x = 540,865.01

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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.