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Finding the Fourth Proportional to 418,869.02, 623,565.74 and 416,377.87

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Solution

The fourth proportional to 418,869.02, 623,565.74 and 416,377.87 is: 619,857.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,869.02 : 623,565.74 = 416,377.87 : x
  2. Step 2: Convert to fraction form
    418,869.02/623,565.74 = 416,377.87/x
  3. Step 3: Cross multiply
    418,869.02x = 623,565.74 × 416,377.87
  4. Step 4: Simplify right side
    418,869.02x = 259,638,974,108.20
  5. Step 5: Solve for x
    x = 259,638,974,108.20/418,869.02
  6. Step 6: Final answer
    x = 619,857.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.