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Finding the Fourth Proportional to 661,363.80, 912,641.18 and 370,959.40

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Solution

The fourth proportional to 661,363.80, 912,641.18 and 370,959.40 is: 511,901.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,363.80 : 912,641.18 = 370,959.40 : x
  2. Step 2: Convert to fraction form
    661,363.80/912,641.18 = 370,959.40/x
  3. Step 3: Cross multiply
    661,363.80x = 912,641.18 × 370,959.40
  4. Step 4: Simplify right side
    661,363.80x = 338,552,824,548.09
  5. Step 5: Solve for x
    x = 338,552,824,548.09/661,363.80
  6. Step 6: Final answer
    x = 511,901.05

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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.