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Finding the Fourth Proportional to 644,554.51, 889,508.45 and 372,707.71

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Solution

The fourth proportional to 644,554.51, 889,508.45 and 372,707.71 is: 514,350.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,554.51 : 889,508.45 = 372,707.71 : x
  2. Step 2: Convert to fraction form
    644,554.51/889,508.45 = 372,707.71/x
  3. Step 3: Cross multiply
    644,554.51x = 889,508.45 × 372,707.71
  4. Step 4: Simplify right side
    644,554.51x = 331,526,657,425.15
  5. Step 5: Solve for x
    x = 331,526,657,425.15/644,554.51
  6. Step 6: Final answer
    x = 514,350.07

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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.