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Finding the Fourth Proportional to 418,878.03, 623,579.13 and 416,386.89

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Solution

The fourth proportional to 418,878.03, 623,579.13 and 416,386.89 is: 619,870.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,878.03 : 623,579.13 = 416,386.89 : x
  2. Step 2: Convert to fraction form
    418,878.03/623,579.13 = 416,386.89/x
  3. Step 3: Cross multiply
    418,878.03x = 623,579.13 × 416,386.89
  4. Step 4: Simplify right side
    418,878.03x = 259,650,174,609.61
  5. Step 5: Solve for x
    x = 259,650,174,609.61/418,878.03
  6. Step 6: Final answer
    x = 619,870.60

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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.