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Finding the Fourth Proportional to 1,316,603.16, 1,974,978.45 and 369,900

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Solution

The fourth proportional to 1,316,603.16, 1,974,978.45 and 369,900 is: 554,870.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,603.16 : 1,974,978.45 = 369,900 : x
  2. Step 2: Convert to fraction form
    1,316,603.16/1,974,978.45 = 369,900/x
  3. Step 3: Cross multiply
    1,316,603.16x = 1,974,978.45 × 369,900
  4. Step 4: Simplify right side
    1,316,603.16x = 730,544,528,655
  5. Step 5: Solve for x
    x = 730,544,528,655/1,316,603.16
  6. Step 6: Final answer
    x = 554,870.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.