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Finding the Fourth Proportional to 8,578,482.72, 11,835,346.71 and 5,482,818.18

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Solution

The fourth proportional to 8,578,482.72, 11,835,346.71 and 5,482,818.18 is: 7,564,397.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,578,482.72 : 11,835,346.71 = 5,482,818.18 : x
  2. Step 2: Convert to fraction form
    8,578,482.72/11,835,346.71 = 5,482,818.18/x
  3. Step 3: Cross multiply
    8,578,482.72x = 11,835,346.71 × 5,482,818.18
  4. Step 4: Simplify right side
    8,578,482.72x = 64,891,054,108,191.19
  5. Step 5: Solve for x
    x = 64,891,054,108,191.19/8,578,482.72
  6. Step 6: Final answer
    x = 7,564,397.60

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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.