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Finding the Fourth Proportional to 638,545.91, 880,477.48 and 521,897.39

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Solution

The fourth proportional to 638,545.91, 880,477.48 and 521,897.39 is: 719,633.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,545.91 : 880,477.48 = 521,897.39 : x
  2. Step 2: Convert to fraction form
    638,545.91/880,477.48 = 521,897.39/x
  3. Step 3: Cross multiply
    638,545.91x = 880,477.48 × 521,897.39
  4. Step 4: Simplify right side
    638,545.91x = 459,518,899,662.23
  5. Step 5: Solve for x
    x = 459,518,899,662.23/638,545.91
  6. Step 6: Final answer
    x = 719,633.30

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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.