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Finding the Fourth Proportional to 885,689.69, 1,221,803.69 and 517,926.33

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Solution

The fourth proportional to 885,689.69, 1,221,803.69 and 517,926.33 is: 714,476.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,689.69 : 1,221,803.69 = 517,926.33 : x
  2. Step 2: Convert to fraction form
    885,689.69/1,221,803.69 = 517,926.33/x
  3. Step 3: Cross multiply
    885,689.69x = 1,221,803.69 × 517,926.33
  4. Step 4: Simplify right side
    885,689.69x = 632,804,298,552.53
  5. Step 5: Solve for x
    x = 632,804,298,552.53/885,689.69
  6. Step 6: Final answer
    x = 714,476.31

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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.