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Finding the Fourth Proportional to 98,925.80, 136,564.90 and 56,476.14

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Solution

The fourth proportional to 98,925.80, 136,564.90 and 56,476.14 is: 77,964.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,925.80 : 136,564.90 = 56,476.14 : x
  2. Step 2: Convert to fraction form
    98,925.80/136,564.90 = 56,476.14/x
  3. Step 3: Cross multiply
    98,925.80x = 136,564.90 × 56,476.14
  4. Step 4: Simplify right side
    98,925.80x = 7,712,658,411.49
  5. Step 5: Solve for x
    x = 7,712,658,411.49/98,925.80
  6. Step 6: Final answer
    x = 77,964.07

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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.