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Finding the Fourth Proportional to 617,999.10, 926,123.85 and 542,766.30

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Solution

The fourth proportional to 617,999.10, 926,123.85 and 542,766.30 is: 813,381.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,999.10 : 926,123.85 = 542,766.30 : x
  2. Step 2: Convert to fraction form
    617,999.10/926,123.85 = 542,766.30/x
  3. Step 3: Cross multiply
    617,999.10x = 926,123.85 × 542,766.30
  4. Step 4: Simplify right side
    617,999.10x = 502,668,815,406.26
  5. Step 5: Solve for x
    x = 502,668,815,406.26/617,999.10
  6. Step 6: Final answer
    x = 813,381.14

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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.