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Finding the Fourth Proportional to 866,306.76, 1,299,681.54 and 333,684.78

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Solution

The fourth proportional to 866,306.76, 1,299,681.54 and 333,684.78 is: 500,612.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,306.76 : 1,299,681.54 = 333,684.78 : x
  2. Step 2: Convert to fraction form
    866,306.76/1,299,681.54 = 333,684.78/x
  3. Step 3: Cross multiply
    866,306.76x = 1,299,681.54 × 333,684.78
  4. Step 4: Simplify right side
    866,306.76x = 433,683,948,744.96
  5. Step 5: Solve for x
    x = 433,683,948,744.96/866,306.76
  6. Step 6: Final answer
    x = 500,612.45

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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.