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Finding the Fourth Proportional to 1,375,707, 1,898,475.66 and 772,095

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Solution

The fourth proportional to 1,375,707, 1,898,475.66 and 772,095 is: 1,065,491.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,707 : 1,898,475.66 = 772,095 : x
  2. Step 2: Convert to fraction form
    1,375,707/1,898,475.66 = 772,095/x
  3. Step 3: Cross multiply
    1,375,707x = 1,898,475.66 × 772,095
  4. Step 4: Simplify right side
    1,375,707x = 1,465,803,564,707.70
  5. Step 5: Solve for x
    x = 1,465,803,564,707.70/1,375,707
  6. Step 6: Final answer
    x = 1,065,491.10

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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.