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Finding the Fourth Proportional to 621,856.90, 932,785.35 and 497,440.90

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Solution

The fourth proportional to 621,856.90, 932,785.35 and 497,440.90 is: 746,161.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,856.90 : 932,785.35 = 497,440.90 : x
  2. Step 2: Convert to fraction form
    621,856.90/932,785.35 = 497,440.90/x
  3. Step 3: Cross multiply
    621,856.90x = 932,785.35 × 497,440.90
  4. Step 4: Simplify right side
    621,856.90x = 464,005,584,010.82
  5. Step 5: Solve for x
    x = 464,005,584,010.82/621,856.90
  6. Step 6: Final answer
    x = 746,161.35

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Half scale
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Double scale
Find fourth proportional to 621,857.90, 932,786.85 and 497,441.90
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.