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Finding the Fourth Proportional to 564,718.80, 779,352.84 and 373,400.40

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Solution

The fourth proportional to 564,718.80, 779,352.84 and 373,400.40 is: 515,319.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,718.80 : 779,352.84 = 373,400.40 : x
  2. Step 2: Convert to fraction form
    564,718.80/779,352.84 = 373,400.40/x
  3. Step 3: Cross multiply
    564,718.80x = 779,352.84 × 373,400.40
  4. Step 4: Simplify right side
    564,718.80x = 291,010,662,197.14
  5. Step 5: Solve for x
    x = 291,010,662,197.14/564,718.80
  6. Step 6: Final answer
    x = 515,319.59

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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.