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Finding the Fourth Proportional to 58,681.40, 88,022.10 and 21,259.40

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Solution

The fourth proportional to 58,681.40, 88,022.10 and 21,259.40 is: 31,889.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,681.40 : 88,022.10 = 21,259.40 : x
  2. Step 2: Convert to fraction form
    58,681.40/88,022.10 = 21,259.40/x
  3. Step 3: Cross multiply
    58,681.40x = 88,022.10 × 21,259.40
  4. Step 4: Simplify right side
    58,681.40x = 1,871,297,032.74
  5. Step 5: Solve for x
    x = 1,871,297,032.74/58,681.40
  6. Step 6: Final answer
    x = 31,889.10

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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.