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Finding the Fourth Proportional to 700,547.25, 966,756.30 and 398,741.25

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Solution

The fourth proportional to 700,547.25, 966,756.30 and 398,741.25 is: 550,263.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,547.25 : 966,756.30 = 398,741.25 : x
  2. Step 2: Convert to fraction form
    700,547.25/966,756.30 = 398,741.25/x
  3. Step 3: Cross multiply
    700,547.25x = 966,756.30 × 398,741.25
  4. Step 4: Simplify right side
    700,547.25x = 385,485,615,507.38
  5. Step 5: Solve for x
    x = 385,485,615,507.38/700,547.25
  6. Step 6: Final answer
    x = 550,263.55

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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.