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Finding the Fourth Proportional to 708,237.88, 977,366.76 and 385,947.20

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Solution

The fourth proportional to 708,237.88, 977,366.76 and 385,947.20 is: 532,606.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,237.88 : 977,366.76 = 385,947.20 : x
  2. Step 2: Convert to fraction form
    708,237.88/977,366.76 = 385,947.20/x
  3. Step 3: Cross multiply
    708,237.88x = 977,366.76 × 385,947.20
  4. Step 4: Simplify right side
    708,237.88x = 377,211,964,395.07
  5. Step 5: Solve for x
    x = 377,211,964,395.07/708,237.88
  6. Step 6: Final answer
    x = 532,606.31

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Double scale
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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.