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Finding the Fourth Proportional to 98,754.81, 136,294.16 and 64,792.01

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Solution

The fourth proportional to 98,754.81, 136,294.16 and 64,792.01 is: 89,421.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,754.81 : 136,294.16 = 64,792.01 : x
  2. Step 2: Convert to fraction form
    98,754.81/136,294.16 = 64,792.01/x
  3. Step 3: Cross multiply
    98,754.81x = 136,294.16 × 64,792.01
  4. Step 4: Simplify right side
    98,754.81x = 8,830,771,572.23
  5. Step 5: Solve for x
    x = 8,830,771,572.23/98,754.81
  6. Step 6: Final answer
    x = 89,421.18

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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.