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Finding the Fourth Proportional to 1,249,867.05, 1,724,125.92 and 1,017,543.90

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Solution

The fourth proportional to 1,249,867.05, 1,724,125.92 and 1,017,543.90 is: 1,403,648.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,867.05 : 1,724,125.92 = 1,017,543.90 : x
  2. Step 2: Convert to fraction form
    1,249,867.05/1,724,125.92 = 1,017,543.90/x
  3. Step 3: Cross multiply
    1,249,867.05x = 1,724,125.92 × 1,017,543.90
  4. Step 4: Simplify right side
    1,249,867.05x = 1,754,373,812,727.89
  5. Step 5: Solve for x
    x = 1,754,373,812,727.89/1,249,867.05
  6. Step 6: Final answer
    x = 1,403,648.34

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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.