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Finding the Fourth Proportional to 98,637.68, 136,113 and 56,188.40

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Solution

The fourth proportional to 98,637.68, 136,113 and 56,188.40 is: 77,536.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,637.68 : 136,113 = 56,188.40 : x
  2. Step 2: Convert to fraction form
    98,637.68/136,113 = 56,188.40/x
  3. Step 3: Cross multiply
    98,637.68x = 136,113 × 56,188.40
  4. Step 4: Simplify right side
    98,637.68x = 7,647,971,689.20
  5. Step 5: Solve for x
    x = 7,647,971,689.20/98,637.68
  6. Step 6: Final answer
    x = 77,536.01

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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.