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Finding the Fourth Proportional to 827,217.40, 1,155,742.40 and 827,217.40

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Solution

The fourth proportional to 827,217.40, 1,155,742.40 and 827,217.40 is: 1,155,742.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,217.40 : 1,155,742.40 = 827,217.40 : x
  2. Step 2: Convert to fraction form
    827,217.40/1,155,742.40 = 827,217.40/x
  3. Step 3: Cross multiply
    827,217.40x = 1,155,742.40 × 827,217.40
  4. Step 4: Simplify right side
    827,217.40x = 956,050,223,197.76
  5. Step 5: Solve for x
    x = 956,050,223,197.76/827,217.40
  6. Step 6: Final answer
    x = 1,155,742.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.