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Finding the Fourth Proportional to 7,153,607.52, 9,866,981.52 and 4,857,782.40

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Solution

The fourth proportional to 7,153,607.52, 9,866,981.52 and 4,857,782.40 is: 6,700,346.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153,607.52 : 9,866,981.52 = 4,857,782.40 : x
  2. Step 2: Convert to fraction form
    7,153,607.52/9,866,981.52 = 4,857,782.40/x
  3. Step 3: Cross multiply
    7,153,607.52x = 9,866,981.52 × 4,857,782.40
  4. Step 4: Simplify right side
    7,153,607.52x = 47,931,649,168,981.25
  5. Step 5: Solve for x
    x = 47,931,649,168,981.25/7,153,607.52
  6. Step 6: Final answer
    x = 6,700,346.51

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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.