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Finding the Fourth Proportional to 660,803.52, 984,211.20 and 657,581.76

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Solution

The fourth proportional to 660,803.52, 984,211.20 and 657,581.76 is: 979,412.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,803.52 : 984,211.20 = 657,581.76 : x
  2. Step 2: Convert to fraction form
    660,803.52/984,211.20 = 657,581.76/x
  3. Step 3: Cross multiply
    660,803.52x = 984,211.20 × 657,581.76
  4. Step 4: Simplify right side
    660,803.52x = 647,199,333,107.71
  5. Step 5: Solve for x
    x = 647,199,333,107.71/660,803.52
  6. Step 6: Final answer
    x = 979,412.66

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.