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Finding the Fourth Proportional to 657,853.75, 907,860.18 and 403,155.73

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Solution

The fourth proportional to 657,853.75, 907,860.18 and 403,155.73 is: 556,368.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,853.75 : 907,860.18 = 403,155.73 : x
  2. Step 2: Convert to fraction form
    657,853.75/907,860.18 = 403,155.73/x
  3. Step 3: Cross multiply
    657,853.75x = 907,860.18 × 403,155.73
  4. Step 4: Simplify right side
    657,853.75x = 366,009,033,605.83
  5. Step 5: Solve for x
    x = 366,009,033,605.83/657,853.75
  6. Step 6: Final answer
    x = 556,368.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.