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Finding the Fourth Proportional to 709,926.04, 979,737.78 and 387,666.10

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Solution

The fourth proportional to 709,926.04, 979,737.78 and 387,666.10 is: 535,000.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,926.04 : 979,737.78 = 387,666.10 : x
  2. Step 2: Convert to fraction form
    709,926.04/979,737.78 = 387,666.10/x
  3. Step 3: Cross multiply
    709,926.04x = 979,737.78 × 387,666.10
  4. Step 4: Simplify right side
    709,926.04x = 379,811,124,195.26
  5. Step 5: Solve for x
    x = 379,811,124,195.26/709,926.04
  6. Step 6: Final answer
    x = 535,000.98

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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.