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Finding the Fourth Proportional to 200,522.80, 300,802.76 and 65,587.64

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Solution

The fourth proportional to 200,522.80, 300,802.76 and 65,587.64 is: 98,387.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,522.80 : 300,802.76 = 65,587.64 : x
  2. Step 2: Convert to fraction form
    200,522.80/300,802.76 = 65,587.64/x
  3. Step 3: Cross multiply
    200,522.80x = 300,802.76 × 65,587.64
  4. Step 4: Simplify right side
    200,522.80x = 19,728,941,547.89
  5. Step 5: Solve for x
    x = 19,728,941,547.89/200,522.80
  6. Step 6: Final answer
    x = 98,387.52

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1.5x scale

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.