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Finding the Fourth Proportional to 658,886.60, 988,329.90 and 577,530.20

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Solution

The fourth proportional to 658,886.60, 988,329.90 and 577,530.20 is: 866,295.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,886.60 : 988,329.90 = 577,530.20 : x
  2. Step 2: Convert to fraction form
    658,886.60/988,329.90 = 577,530.20/x
  3. Step 3: Cross multiply
    658,886.60x = 988,329.90 × 577,530.20
  4. Step 4: Simplify right side
    658,886.60x = 570,790,364,812.98
  5. Step 5: Solve for x
    x = 570,790,364,812.98/658,886.60
  6. Step 6: Final answer
    x = 866,295.30

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Double scale
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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.