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Finding the Fourth Proportional to 656,859.70, 985,289.55 and 341,931.70

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Solution

The fourth proportional to 656,859.70, 985,289.55 and 341,931.70 is: 512,897.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,859.70 : 985,289.55 = 341,931.70 : x
  2. Step 2: Convert to fraction form
    656,859.70/985,289.55 = 341,931.70/x
  3. Step 3: Cross multiply
    656,859.70x = 985,289.55 × 341,931.70
  4. Step 4: Simplify right side
    656,859.70x = 336,901,730,823.74
  5. Step 5: Solve for x
    x = 336,901,730,823.74/656,859.70
  6. Step 6: Final answer
    x = 512,897.55

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Similar ratio
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1.5x scale

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.