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Finding the Fourth Proportional to 2,547,971.81, 3,821,957.70 and 928,862.06

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Solution

The fourth proportional to 2,547,971.81, 3,821,957.70 and 928,862.06 is: 1,393,293.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,547,971.81 : 3,821,957.70 = 928,862.06 : x
  2. Step 2: Convert to fraction form
    2,547,971.81/3,821,957.70 = 928,862.06/x
  3. Step 3: Cross multiply
    2,547,971.81x = 3,821,957.70 × 928,862.06
  4. Step 4: Simplify right side
    2,547,971.81x = 3,550,071,502,454.86
  5. Step 5: Solve for x
    x = 3,550,071,502,454.86/2,547,971.81
  6. Step 6: Final answer
    x = 1,393,293.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.