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Finding the Fourth Proportional to 1,934,561.48, 2,668,866.72 and 1,208,148.08

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Solution

The fourth proportional to 1,934,561.48, 2,668,866.72 and 1,208,148.08 is: 1,666,727.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,934,561.48 : 2,668,866.72 = 1,208,148.08 : x
  2. Step 2: Convert to fraction form
    1,934,561.48/2,668,866.72 = 1,208,148.08/x
  3. Step 3: Cross multiply
    1,934,561.48x = 2,668,866.72 × 1,208,148.08
  4. Step 4: Simplify right side
    1,934,561.48x = 3,224,386,203,543.90
  5. Step 5: Solve for x
    x = 3,224,386,203,543.90/1,934,561.48
  6. Step 6: Final answer
    x = 1,666,727.18

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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.