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Finding the Fourth Proportional to 877,243,981.60, 1,315,865,972.40 and 360,045,600.40

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Solution

The fourth proportional to 877,243,981.60, 1,315,865,972.40 and 360,045,600.40 is: 540,068,400.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,243,981.60 : 1,315,865,972.40 = 360,045,600.40 : x
  2. Step 2: Convert to fraction form
    877,243,981.60/1,315,865,972.40 = 360,045,600.40/x
  3. Step 3: Cross multiply
    877,243,981.60x = 1,315,865,972.40 × 360,045,600.40
  4. Step 4: Simplify right side
    877,243,981.60x = 473,771,754,078,687,808
  5. Step 5: Solve for x
    x = 473,771,754,078,687,808/877,243,981.60
  6. Step 6: Final answer
    x = 540,068,400.60

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1.5x scale

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.