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Finding the Fourth Proportional to 717,045.92, 989,502.72 and 411,112.16

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Solution

The fourth proportional to 717,045.92, 989,502.72 and 411,112.16 is: 567,322.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,045.92 : 989,502.72 = 411,112.16 : x
  2. Step 2: Convert to fraction form
    717,045.92/989,502.72 = 411,112.16/x
  3. Step 3: Cross multiply
    717,045.92x = 989,502.72 × 411,112.16
  4. Step 4: Simplify right side
    717,045.92x = 406,796,600,545.08
  5. Step 5: Solve for x
    x = 406,796,600,545.08/717,045.92
  6. Step 6: Final answer
    x = 567,322.94

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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.