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Finding the Fourth Proportional to 623,907.80, 935,400.90 and 249,738.20

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Solution

The fourth proportional to 623,907.80, 935,400.90 and 249,738.20 is: 374,422.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,907.80 : 935,400.90 = 249,738.20 : x
  2. Step 2: Convert to fraction form
    623,907.80/935,400.90 = 249,738.20/x
  3. Step 3: Cross multiply
    623,907.80x = 935,400.90 × 249,738.20
  4. Step 4: Simplify right side
    623,907.80x = 233,605,337,044.38
  5. Step 5: Solve for x
    x = 233,605,337,044.38/623,907.80
  6. Step 6: Final answer
    x = 374,422.85

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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.