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Finding the Fourth Proportional to 1,971,827.06, 2,721,123.16 and 1,066,409.06

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Solution

The fourth proportional to 1,971,827.06, 2,721,123.16 and 1,066,409.06 is: 1,471,645.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971,827.06 : 2,721,123.16 = 1,066,409.06 : x
  2. Step 2: Convert to fraction form
    1,971,827.06/2,721,123.16 = 1,066,409.06/x
  3. Step 3: Cross multiply
    1,971,827.06x = 2,721,123.16 × 1,066,409.06
  4. Step 4: Simplify right side
    1,971,827.06x = 2,901,830,391,199.83
  5. Step 5: Solve for x
    x = 2,901,830,391,199.83/1,971,827.06
  6. Step 6: Final answer
    x = 1,471,645.49

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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.